森山直太郎
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album: ローレライ (New 東京混声合唱団愛唱曲集)
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  date published: 2012-07-25
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    by artist: Angela Aki
    by artist: Hiroaki Takaha
    by artist: 前田勝則
    by artist: Kazuki Yamada
    by artist: 東京混声合唱団
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      date published: 2012-07-25
    popularity: 3
    genre: j-pop
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      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
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      date published: 2026-07-30T05:43:45Z
    audio: 手紙 (混声四部版)
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      additional property: Speechiness
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      additional property: Acousticness
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      additional property: Instrumentalness
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      additional property: Liveness
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      additional property: Valence (Positivity)
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      additional property: Loudness (dB)
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  track: 虹
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    duration: PT4M22S
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    by artist: 森山直太郎
    by artist: Takatimi Nobunaga
    by artist: 前田勝則
    by artist: 加藤綾香
    by artist: Kazuki Yamada
    by artist: 東京混声合唱団
    in album: ローレライ (New 東京混声合唱団愛唱曲集)
      type: MusicAlbum
      date published: 2012-07-25
    popularity: 7
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    additional property: OTSVerifyInstructions
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      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-07T16:07:00Z
    audio: 虹
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      additional property: Acousticness
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      additional property: Instrumentalness
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